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  <a href="#synopsis" title="Synopsis" class="md-nav__link">
    Synopsis
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  <a href="#ft_param_tag_ignore_typographic_family" title="FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY" class="md-nav__link">
    FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY
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  <a href="#ft_param_tag_ignore_typographic_subfamily" title="FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY" class="md-nav__link">
    FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY
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  <a href="#ft_param_tag_incremental" title="FT_PARAM_TAG_INCREMENTAL" class="md-nav__link">
    FT_PARAM_TAG_INCREMENTAL
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  <a href="#ft_param_tag_lcd_filter_weights" title="FT_PARAM_TAG_LCD_FILTER_WEIGHTS" class="md-nav__link">
    FT_PARAM_TAG_LCD_FILTER_WEIGHTS
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  <a href="#ft_param_tag_random_seed" title="FT_PARAM_TAG_RANDOM_SEED" class="md-nav__link">
    FT_PARAM_TAG_RANDOM_SEED
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  <a href="#ft_param_tag_stem_darkening" title="FT_PARAM_TAG_STEM_DARKENING" class="md-nav__link">
    FT_PARAM_TAG_STEM_DARKENING
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  <a href="#ft_param_tag_unpatented_hinting" title="FT_PARAM_TAG_UNPATENTED_HINTING" class="md-nav__link">
    FT_PARAM_TAG_UNPATENTED_HINTING
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                <p><a href="https://www.freetype.org">FreeType</a> &raquo; <a href="../">Docs</a> &raquo; <a href="index.html#controlling-freetype-modules">Controlling FreeType Modules</a> &raquo; Parameter Tags</p>
<hr />
<h1 id="parameter-tags">Parameter Tags<a class="headerlink" href="#parameter-tags" title="Permanent link">&para;</a></h1>
<h2 id="synopsis">Synopsis<a class="headerlink" href="#synopsis" title="Permanent link">&para;</a></h2>
<p>This section contains macros for the <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> structure that are used with various functions to activate some special functionality or different behaviour of various components of FreeType.</p>
<h2 id="ft_param_tag_ignore_typographic_family">FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY<a class="headerlink" href="#ft_param_tag_ignore_typographic_family" title="Permanent link">&para;</a></h2>
<div class = "codehilite">
<pre>
#<span class="keyword">define</span> <b>FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY</b> \
          <a href="ft2-basic_types.html#ft_make_tag">FT_MAKE_TAG</a>( 'i', 'g', 'p', 'f' )

  /* this constant is deprecated */
#<span class="keyword">define</span> FT_PARAM_TAG_IGNORE_PREFERRED_FAMILY \
          <b>FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_FAMILY</b>
</pre>
</div>

<p>A tag for <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> to make <code><a href="ft2-base_interface.html#ft_open_face">FT_Open_Face</a></code> ignore typographic family names in the &lsquo;name&rsquo; table (introduced in OpenType version 1.4). Use this for backward compatibility with legacy systems that have a four-faces-per-family restriction.</p>
<h4>since</h4>

<p>2.8</p>
<hr>

<h2 id="ft_param_tag_ignore_typographic_subfamily">FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY<a class="headerlink" href="#ft_param_tag_ignore_typographic_subfamily" title="Permanent link">&para;</a></h2>
<div class = "codehilite">
<pre>
#<span class="keyword">define</span> <b>FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY</b> \
          <a href="ft2-basic_types.html#ft_make_tag">FT_MAKE_TAG</a>( 'i', 'g', 'p', 's' )

  /* this constant is deprecated */
#<span class="keyword">define</span> FT_PARAM_TAG_IGNORE_PREFERRED_SUBFAMILY \
          <b>FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY</b>
</pre>
</div>

<p>A tag for <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> to make <code><a href="ft2-base_interface.html#ft_open_face">FT_Open_Face</a></code> ignore typographic subfamily names in the &lsquo;name&rsquo; table (introduced in OpenType version 1.4). Use this for backward compatibility with legacy systems that have a four-faces-per-family restriction.</p>
<h4>since</h4>

<p>2.8</p>
<hr>

<h2 id="ft_param_tag_incremental">FT_PARAM_TAG_INCREMENTAL<a class="headerlink" href="#ft_param_tag_incremental" title="Permanent link">&para;</a></h2>
<div class = "codehilite">
<pre>
#<span class="keyword">define</span> <b>FT_PARAM_TAG_INCREMENTAL</b> \
          <a href="ft2-basic_types.html#ft_make_tag">FT_MAKE_TAG</a>( 'i', 'n', 'c', 'r' )
</pre>
</div>

<p>An <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> tag to be used with <code><a href="ft2-base_interface.html#ft_open_face">FT_Open_Face</a></code> to indicate incremental glyph loading.</p>
<hr>

<h2 id="ft_param_tag_lcd_filter_weights">FT_PARAM_TAG_LCD_FILTER_WEIGHTS<a class="headerlink" href="#ft_param_tag_lcd_filter_weights" title="Permanent link">&para;</a></h2>
<div class = "codehilite">
<pre>
#<span class="keyword">define</span> <b>FT_PARAM_TAG_LCD_FILTER_WEIGHTS</b> \
          <a href="ft2-basic_types.html#ft_make_tag">FT_MAKE_TAG</a>( 'l', 'c', 'd', 'f' )
</pre>
</div>

<p>An <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> tag to be used with <code><a href="ft2-base_interface.html#ft_face_properties">FT_Face_Properties</a></code>. The corresponding argument specifies the five LCD filter weights for a given face (if using <code><a href="ft2-base_interface.html#ft_load_target_xxx">FT_LOAD_TARGET_LCD</a></code>, for example), overriding the global default values or the values set up with <code><a href="ft2-lcd_rendering.html#ft_library_setlcdfilterweights">FT_Library_SetLcdFilterWeights</a></code>.</p>
<h4>since</h4>

<p>2.8</p>
<hr>

<h2 id="ft_param_tag_random_seed">FT_PARAM_TAG_RANDOM_SEED<a class="headerlink" href="#ft_param_tag_random_seed" title="Permanent link">&para;</a></h2>
<div class = "codehilite">
<pre>
#<span class="keyword">define</span> <b>FT_PARAM_TAG_RANDOM_SEED</b> \
          <a href="ft2-basic_types.html#ft_make_tag">FT_MAKE_TAG</a>( 's', 'e', 'e', 'd' )
</pre>
</div>

<p>An <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> tag to be used with <code><a href="ft2-base_interface.html#ft_face_properties">FT_Face_Properties</a></code>. The corresponding 32bit signed integer argument overrides the font driver's random seed value with a face-specific one; see <code><a href="ft2-properties.html#random-seed">random-seed</a></code>.</p>
<h4>since</h4>

<p>2.8</p>
<hr>

<h2 id="ft_param_tag_stem_darkening">FT_PARAM_TAG_STEM_DARKENING<a class="headerlink" href="#ft_param_tag_stem_darkening" title="Permanent link">&para;</a></h2>
<div class = "codehilite">
<pre>
#<span class="keyword">define</span> <b>FT_PARAM_TAG_STEM_DARKENING</b> \
          <a href="ft2-basic_types.html#ft_make_tag">FT_MAKE_TAG</a>( 'd', 'a', 'r', 'k' )
</pre>
</div>

<p>An <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> tag to be used with <code><a href="ft2-base_interface.html#ft_face_properties">FT_Face_Properties</a></code>. The corresponding Boolean argument specifies whether to apply stem darkening, overriding the global default values or the values set up with <code><a href="ft2-module_management.html#ft_property_set">FT_Property_Set</a></code> (see <code><a href="ft2-properties.html#no-stem-darkening">no-stem-darkening</a></code>).</p>
<p>This is a passive setting that only takes effect if the font driver or autohinter honors it, which the CFF, Type&nbsp;1, and CID drivers always do, but the autohinter only in &lsquo;light&rsquo; hinting mode (as of version 2.9).</p>
<h4>since</h4>

<p>2.8</p>
<hr>

<h2 id="ft_param_tag_unpatented_hinting">FT_PARAM_TAG_UNPATENTED_HINTING<a class="headerlink" href="#ft_param_tag_unpatented_hinting" title="Permanent link">&para;</a></h2>
<div class = "codehilite">
<pre>
#<span class="keyword">define</span> <b>FT_PARAM_TAG_UNPATENTED_HINTING</b> \
          <a href="ft2-basic_types.html#ft_make_tag">FT_MAKE_TAG</a>( 'u', 'n', 'p', 'a' )
</pre>
</div>

<p>Deprecated, no effect.</p>
<p>Previously: A constant used as the tag of an <code><a href="ft2-base_interface.html#ft_parameter">FT_Parameter</a></code> structure to indicate that unpatented methods only should be used by the TrueType bytecode interpreter for a typeface opened by <code><a href="ft2-base_interface.html#ft_open_face">FT_Open_Face</a></code>.</p>
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